We can supply antimony trioxide(Sb2O3) in different grade as buyer's requirements regularly Antimony Trioxide Property:Antimony trioxide is a kind of white fine powder and the main crystal structure is of cubical shape. Application: 1.Used as a fire retardant in the membranes of plastic industry, the enclosures of electric devices and household electric appliances, such as PVC,PP ,PE ,PS ,ABS,PU ...